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<h1>microchip-mcp23008.h</h1>  </div>
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<div class="contents">
<a href="microchip-mcp23008_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*!@addtogroup other</span>
<a name="l00002"></a>00002 <span class="comment"> * @{</span>
<a name="l00003"></a>00003 <span class="comment"> * @defgroup mcp23008 Microchip MCP23008</span>
<a name="l00004"></a>00004 <span class="comment"> * Microchip MCP23008</span>
<a name="l00005"></a>00005 <span class="comment"> * @{</span>
<a name="l00006"></a>00006 <span class="comment"> */</span>
<a name="l00007"></a>00007 
<a name="l00008"></a>00008 <span class="comment">/*</span>
<a name="l00009"></a>00009 <span class="comment"> * $Id: microchip-mcp23008.h 133 2013-03-10 15:15:38Z xander $</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 
<a name="l00012"></a>00012 
<a name="l00013"></a>00013 <span class="preprocessor">#ifndef __MCP23008_H__</span>
<a name="l00014"></a>00014 <span class="preprocessor"></span><span class="preprocessor">#define __MCP23008_H__</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span><span class="comment">/** \file microchip-mcp23008.h</span>
<a name="l00016"></a>00016 <span class="comment"> * \brief Microchip MCP23008 driver</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * microchip-mcp23008.h provides an API for the MCP23008 8 port IO expander.</span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> * Changelog:</span>
<a name="l00021"></a>00021 <span class="comment"> * - 0.3 Rewrite to make use of standard common.h framework.</span>
<a name="l00022"></a>00022 <span class="comment"> * - 0.4 Renamed functions to be inline with new naming standard</span>
<a name="l00023"></a>00023 <span class="comment"> *</span>
<a name="l00024"></a>00024 <span class="comment"> * License: You may use this code as you wish, provided you give credit where it&#39;s due.</span>
<a name="l00025"></a>00025 <span class="comment"> *</span>
<a name="l00026"></a>00026 <span class="comment"> * THIS CODE WILL ONLY WORK WITH ROBOTC VERSION 3.59 AND HIGHER. </span>
<a name="l00027"></a>00027 <span class="comment"></span>
<a name="l00028"></a>00028 <span class="comment"> * \author Xander Soldaat</span>
<a name="l00029"></a>00029 <span class="comment"> * \date 18 June 2009</span>
<a name="l00030"></a>00030 <span class="comment"> * \version 0.4</span>
<a name="l00031"></a>00031 <span class="comment"> */</span>
<a name="l00032"></a>00032 
<a name="l00033"></a>00033 <span class="preprocessor">#pragma systemFile</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef __COMMON_H__</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include &quot;<a class="code" href="common_8h.html" title="Commonly used functions used by drivers.">common.h</a>&quot;</span>
<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span>
<a name="l00039"></a>00039 <span class="comment">// Registers</span>
<a name="l00040"></a><a class="code" href="group__mcp23008.html#ga8a33d4282df2429f6736aeb043cab6c5">00040</a> <span class="preprocessor">#define MCP_REG_IODIR   0x00    </span><span class="comment">/*!&lt; I/O DIRECTION REGISTER */</span>
<a name="l00041"></a><a class="code" href="group__mcp23008.html#ga6435c71cc8eb951b14a25a55d4102697">00041</a> <span class="preprocessor">#define MCP_REG_IPOL    0x01    </span><span class="comment">/*!&lt; INPUT POLARITY REGISTER */</span>
<a name="l00042"></a><a class="code" href="group__mcp23008.html#ga90bb931e62804ca37a9300703b8fe75e">00042</a> <span class="preprocessor">#define MCP_REG_GPINTEN 0x02    </span><span class="comment">/*!&lt; INTERRUPT-ON-CHANGE CONTROL REGISTER */</span>
<a name="l00043"></a><a class="code" href="group__mcp23008.html#ga59da75802972a30b8dd75a678e43f988">00043</a> <span class="preprocessor">#define MCP_REG_DEFVAL  0x03    </span><span class="comment">/*!&lt; DEFAULT COMPARE REGISTER FOR INTERRUPT-ONCHANGE */</span>
<a name="l00044"></a><a class="code" href="group__mcp23008.html#ga9647b2f02fbd71c71177d83e8db88b2a">00044</a> <span class="preprocessor">#define MCP_REG_INTCON  0x04    </span><span class="comment">/*!&lt; INTERRUPT CONTROL REGISTER */</span>
<a name="l00045"></a><a class="code" href="group__mcp23008.html#ga76ffe77fa99ee9675336a8f6812d124a">00045</a> <span class="preprocessor">#define MCP_REG_IOCON   0x05    </span><span class="comment">/*!&lt; CONFIGURATION REGISTER */</span>
<a name="l00046"></a><a class="code" href="group__mcp23008.html#ga576054b61423489bfa1b5a599ab521bc">00046</a> <span class="preprocessor">#define MCP_REG_GPPU    0x06    </span><span class="comment">/*!&lt; PULL-UP RESISTOR CONFIGURATION REGISTER */</span>
<a name="l00047"></a><a class="code" href="group__mcp23008.html#ga9c0db6a32ad0833a12b05312837fc3fd">00047</a> <span class="preprocessor">#define MCP_REG_INTF    0x07    </span><span class="comment">/*!&lt; INTERRUPT FLAG (INTF)REGISTER */</span>
<a name="l00048"></a><a class="code" href="group__mcp23008.html#ga965a6db7b4c0ec6a19cf3ab9bdcb3b2a">00048</a> <span class="preprocessor">#define MCP_REG_INTCAP  0x08    </span><span class="comment">/*!&lt; INTERRUPT CAPTURE REGISTER */</span>
<a name="l00049"></a><a class="code" href="group__mcp23008.html#ga0873e9ed25390d2cc32998efbac19a23">00049</a> <span class="preprocessor">#define MCP_REG_GPIO    0x09    </span><span class="comment">/*!&lt; PORT REGISTER */</span>
<a name="l00050"></a><a class="code" href="group__mcp23008.html#ga7523742d1d87a4a3c410485bba665bd9">00050</a> <span class="preprocessor">#define MCP_REG_OLAT    0x0A    </span><span class="comment">/*!&lt; OUTPUT LATCH REGISTER */</span>
<a name="l00051"></a>00051 
<a name="l00052"></a>00052 <span class="comment">// Special bits in the IOCON register</span>
<a name="l00053"></a><a class="code" href="group__mcp23008.html#ga741f6d111c68ddee08f95e23bf74cf3e">00053</a> <span class="preprocessor">#define MCP_BIT_INTPOL  1       </span><span class="comment">/*!&lt; This bit sets the polarity of the INT output pin */</span>
<a name="l00054"></a><a class="code" href="group__mcp23008.html#gad1c578e55e56fa66b82ffa726141cdfb">00054</a> <span class="preprocessor">#define MCP_BIT_ODR     2       </span><span class="comment">/*!&lt; This bit configures the INT pin as an open-drain output */</span>
<a name="l00055"></a><a class="code" href="group__mcp23008.html#ga4d3aa537847f37d3f80dba5147807212">00055</a> <span class="preprocessor">#define MCP_BIT_DISSLW  4       </span><span class="comment">/*!&lt; Slew Rate control bit for SDA output */</span>
<a name="l00056"></a><a class="code" href="group__mcp23008.html#gae3c89839afc29359f68416f791b3e707">00056</a> <span class="preprocessor">#define MCP_BIT_SREAD   5       </span><span class="comment">/*!&lt; Sequential Operation mode bit */</span>
<a name="l00057"></a>00057 
<a name="l00058"></a><a class="code" href="group__mcp23008.html#ga7e4e83c51ea9e2aad0bbdaa7d39e6463">00058</a> <span class="preprocessor">#define MCP_I2C_ADDR    0x40    </span><span class="comment">/*!&lt; Default base address (A0-A2 tied to gnd) */</span>
<a name="l00059"></a>00059 
<a name="l00060"></a><a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">00060</a> <a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a> <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>;    <span class="comment">/*!&lt; Array to hold I2C command data */</span>
<a name="l00061"></a><a class="code" href="group__mcp23008.html#gad56219cc18e4ef2255889090157ce182">00061</a> <a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a> <a class="code" href="group__mcp23008.html#gad56219cc18e4ef2255889090157ce182">MCP23008_I2CReply</a>;      <span class="comment">/*!&lt; Array to hold I2C reply data */</span>
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga5bea4888063c481ee89a47abe6211ab3">MCP23008setupIO</a>(tSensors link, byte addr, byte mask, byte pullup);
<a name="l00064"></a>00064 <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga5bea4888063c481ee89a47abe6211ab3">MCP23008setupIO</a>(tSensors link, byte addr, byte mask);
<a name="l00065"></a>00065 byte <a class="code" href="group__mcp23008.html#gad2da8e6ba343f03f7ce6d13c821eeeab">MCP23008readIO</a>(tSensors link, byte addr, byte mask);
<a name="l00066"></a>00066 byte <a class="code" href="group__mcp23008.html#gad2da8e6ba343f03f7ce6d13c821eeeab">MCP23008readIO</a>(tSensors link, byte addr);
<a name="l00067"></a>00067 <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga547108b4d7f95d317b6a65e7db21f69c">MCP23008writeIO</a>(tSensors link, byte addr, byte mask);
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(tSensors link, byte addr, byte reg, byte data);
<a name="l00070"></a>00070 byte <a class="code" href="group__mcp23008.html#ga93b8b8f3f7cb7ba07266c5bade314006">MCP23008readReg</a>(tSensors link, byte addr, byte reg);
<a name="l00071"></a>00071 <span class="comment"></span>
<a name="l00072"></a>00072 <span class="comment">/**</span>
<a name="l00073"></a>00073 <span class="comment"> * Write data to the device at the specified register.</span>
<a name="l00074"></a>00074 <span class="comment"> *</span>
<a name="l00075"></a>00075 <span class="comment"> * Note: this is an internal function and should not be called directly.</span>
<a name="l00076"></a>00076 <span class="comment"> * @param link the sensor port number</span>
<a name="l00077"></a>00077 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00078"></a>00078 <span class="comment"> * @param reg the register to write to</span>
<a name="l00079"></a>00079 <span class="comment"> * @param data the data to be written (single byte)</span>
<a name="l00080"></a>00080 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00081"></a>00081 <span class="comment"> */</span>
<a name="l00082"></a><a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">00082</a> <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(tSensors link, byte addr, byte reg, byte data) {
<a name="l00083"></a>00083   memset(<a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a>));
<a name="l00084"></a>00084 
<a name="l00085"></a>00085   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[0] = 3;     <span class="comment">// Message size</span>
<a name="l00086"></a>00086   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[1] = addr;  <span class="comment">//I2C Address</span>
<a name="l00087"></a>00087   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[1] = reg;   <span class="comment">// Register address</span>
<a name="l00088"></a>00088   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[1] = data;  <span class="comment">// Data to be sent</span>
<a name="l00089"></a>00089 
<a name="l00090"></a>00090   <span class="keywordflow">return</span> <a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>, 0);
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092 <span class="comment"></span>
<a name="l00093"></a>00093 <span class="comment">/**</span>
<a name="l00094"></a>00094 <span class="comment"> * Read from the device at the specified register.</span>
<a name="l00095"></a>00095 <span class="comment"> *</span>
<a name="l00096"></a>00096 <span class="comment"> * Note: this is an internal function and should not be called directly.</span>
<a name="l00097"></a>00097 <span class="comment"> * @param link the sensor port number</span>
<a name="l00098"></a>00098 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00099"></a>00099 <span class="comment"> * @param reg the register to write to</span>
<a name="l00100"></a>00100 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00101"></a>00101 <span class="comment"> */</span>
<a name="l00102"></a><a class="code" href="group__mcp23008.html#ga93b8b8f3f7cb7ba07266c5bade314006">00102</a> byte <a class="code" href="group__mcp23008.html#ga93b8b8f3f7cb7ba07266c5bade314006">MCP23008readReg</a>(tSensors link, byte addr, byte reg) {
<a name="l00103"></a>00103   memset(<a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>, 0, <span class="keyword">sizeof</span>(<a class="code" href="group__common.html#gaa172ef131853460e5b9f5c6db81d30f4">tByteArray</a>));
<a name="l00104"></a>00104 
<a name="l00105"></a>00105   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[0] = 2;     <span class="comment">// Message size</span>
<a name="l00106"></a>00106   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[1] = addr;  <span class="comment">//I2C Address</span>
<a name="l00107"></a>00107   <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>[1] = reg;   <span class="comment">// Register address</span>
<a name="l00108"></a>00108 
<a name="l00109"></a>00109   <a class="code" href="group__common.html#gad02e06f83b264ee6fc7df41eb4712080">writeI2C</a>(link, <a class="code" href="group__mcp23008.html#ga9d075a08bd8b8baaabc6e75af1e7d724">MCP23008_I2CRequest</a>, 0);
<a name="l00110"></a>00110   readI2C(link, <a class="code" href="group__mcp23008.html#gad56219cc18e4ef2255889090157ce182">MCP23008_I2CReply</a>, 1);
<a name="l00111"></a>00111 
<a name="l00112"></a>00112   <span class="keywordflow">return</span> <a class="code" href="group__mcp23008.html#gad56219cc18e4ef2255889090157ce182">MCP23008_I2CReply</a>[0];
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 <span class="comment"></span>
<a name="l00115"></a>00115 <span class="comment">/**</span>
<a name="l00116"></a>00116 <span class="comment"> * Setup the pins as either inputs or outputs as specified by the mask.</span>
<a name="l00117"></a>00117 <span class="comment"> * 0 is input, 1 is output</span>
<a name="l00118"></a>00118 <span class="comment"> * @param link the sensor port number</span>
<a name="l00119"></a>00119 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00120"></a>00120 <span class="comment"> * @param mask the pins to change the configuration for</span>
<a name="l00121"></a>00121 <span class="comment"> * @param pullup the pins to change the internal pullup resistor for</span>
<a name="l00122"></a>00122 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00123"></a>00123 <span class="comment"> */</span>
<a name="l00124"></a><a class="code" href="group__mcp23008.html#ga5bea4888063c481ee89a47abe6211ab3">00124</a> <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga5bea4888063c481ee89a47abe6211ab3">MCP23008setupIO</a>(tSensors link, byte addr, byte mask, byte pullup) {
<a name="l00125"></a>00125   <span class="keywordflow">if</span> (!<a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga8a33d4282df2429f6736aeb043cab6c5">MCP_REG_IODIR</a>, mask))
<a name="l00126"></a>00126     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00127"></a>00127 
<a name="l00128"></a>00128   <span class="keywordflow">if</span> (!<a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga576054b61423489bfa1b5a599ab521bc">MCP_REG_GPPU</a>, pullup))
<a name="l00129"></a>00129     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00130"></a>00130 
<a name="l00131"></a>00131   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133 <span class="comment"></span>
<a name="l00134"></a>00134 <span class="comment">/**</span>
<a name="l00135"></a>00135 <span class="comment"> * Setup the pins as either inputs or outputs as specified by the mask.</span>
<a name="l00136"></a>00136 <span class="comment"> * 0 is input, 1 is output</span>
<a name="l00137"></a>00137 <span class="comment"> * @param link the sensor port number</span>
<a name="l00138"></a>00138 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00139"></a>00139 <span class="comment"> * @param mask the pins to change the configuration for</span>
<a name="l00140"></a>00140 <span class="comment"> * @return true if no error occured, false if it did</span>
<a name="l00141"></a>00141 <span class="comment"> */</span>
<a name="l00142"></a><a class="code" href="group__mcp23008.html#gad1082dc1a96d405bb833c9e9912ec355">00142</a> <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga5bea4888063c481ee89a47abe6211ab3">MCP23008setupIO</a>(tSensors link, byte addr, byte mask) {
<a name="l00143"></a>00143   <span class="keywordflow">if</span> (!<a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga8a33d4282df2429f6736aeb043cab6c5">MCP_REG_IODIR</a>, mask))
<a name="l00144"></a>00144     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00145"></a>00145 
<a name="l00146"></a>00146   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00147"></a>00147 }
<a name="l00148"></a>00148 <span class="comment"></span>
<a name="l00149"></a>00149 <span class="comment">/**</span>
<a name="l00150"></a>00150 <span class="comment"> * Read the states of the pins as specified by the mask</span>
<a name="l00151"></a>00151 <span class="comment"> *</span>
<a name="l00152"></a>00152 <span class="comment"> * @param link the sensor port number</span>
<a name="l00153"></a>00153 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00154"></a>00154 <span class="comment"> * @param mask the pins to get the status for</span>
<a name="l00155"></a>00155 <span class="comment"> * @return the value of the pins</span>
<a name="l00156"></a>00156 <span class="comment"> */</span>
<a name="l00157"></a><a class="code" href="group__mcp23008.html#gad2da8e6ba343f03f7ce6d13c821eeeab">00157</a> byte <a class="code" href="group__mcp23008.html#gad2da8e6ba343f03f7ce6d13c821eeeab">MCP23008readIO</a>(tSensors link, byte addr, byte mask) {
<a name="l00158"></a>00158   <span class="keywordflow">return</span> <a class="code" href="group__mcp23008.html#ga93b8b8f3f7cb7ba07266c5bade314006">MCP23008readReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga0873e9ed25390d2cc32998efbac19a23">MCP_REG_GPIO</a>) &amp; mask;
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160 <span class="comment"></span>
<a name="l00161"></a>00161 <span class="comment">/**</span>
<a name="l00162"></a>00162 <span class="comment"> * Read the states of all of the pins</span>
<a name="l00163"></a>00163 <span class="comment"> *</span>
<a name="l00164"></a>00164 <span class="comment"> * @param link the sensor port number</span>
<a name="l00165"></a>00165 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00166"></a>00166 <span class="comment"> * @return the value of the pins</span>
<a name="l00167"></a>00167 <span class="comment"> */</span>
<a name="l00168"></a><a class="code" href="group__mcp23008.html#gaa7cbe31bfad78367488c4b7164fd1af4">00168</a> byte <a class="code" href="group__mcp23008.html#gad2da8e6ba343f03f7ce6d13c821eeeab">MCP23008readIO</a>(tSensors link, byte addr) {
<a name="l00169"></a>00169   <span class="keywordflow">return</span> <a class="code" href="group__mcp23008.html#ga93b8b8f3f7cb7ba07266c5bade314006">MCP23008readReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga0873e9ed25390d2cc32998efbac19a23">MCP_REG_GPIO</a>);
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 <span class="comment"></span>
<a name="l00172"></a>00172 <span class="comment">/**</span>
<a name="l00173"></a>00173 <span class="comment"> * Write to the pins specified specified by the mask.</span>
<a name="l00174"></a>00174 <span class="comment"> *</span>
<a name="l00175"></a>00175 <span class="comment"> * @param link the sensor port number</span>
<a name="l00176"></a>00176 <span class="comment"> * @param addr the address of the MCP23008</span>
<a name="l00177"></a>00177 <span class="comment"> * @param mask the state of the pins that is to be written</span>
<a name="l00178"></a>00178 <span class="comment"> * @return the value of the pins</span>
<a name="l00179"></a>00179 <span class="comment"> */</span>
<a name="l00180"></a><a class="code" href="group__mcp23008.html#ga547108b4d7f95d317b6a65e7db21f69c">00180</a> <span class="keywordtype">bool</span> <a class="code" href="group__mcp23008.html#ga547108b4d7f95d317b6a65e7db21f69c">MCP23008writeIO</a>(tSensors link, byte addr, byte mask) {
<a name="l00181"></a>00181   <span class="keywordflow">if</span> (!<a class="code" href="group__mcp23008.html#ga47779249fa3f6245b2877777ce81ad92">MCP23008writeReg</a>(link, addr, <a class="code" href="group__mcp23008.html#ga7523742d1d87a4a3c410485bba665bd9">MCP_REG_OLAT</a>, mask))
<a name="l00182"></a>00182     <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00183"></a>00183 
<a name="l00184"></a>00184   <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00185"></a>00185 }
<a name="l00186"></a>00186 
<a name="l00187"></a>00187 <span class="preprocessor">#endif // __MCP23008_H__</span>
<a name="l00188"></a>00188 <span class="preprocessor"></span>
<a name="l00189"></a>00189 <span class="comment">/*</span>
<a name="l00190"></a>00190 <span class="comment"> * $Id: microchip-mcp23008.h 133 2013-03-10 15:15:38Z xander $</span>
<a name="l00191"></a>00191 <span class="comment"> */</span>
<a name="l00192"></a>00192 <span class="comment">/* @} */</span>
<a name="l00193"></a>00193 <span class="comment">/* @} */</span>
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